irule to detect if node is down

Hi preilly,

Why not just use a "Priority" on the node?

pool my_pool {
lb_mode fastest
min active members 1
member 1.2.3.4:80 priority 2
member 1.2.3.5:80 priority 1
}

This will mean that 1.2.3.4:80 will always be the "chosen" node, unless it is down, when 1.2.3.5:80 will be used...

Check out the Config Guide for LTM "Specifying priority-based member activation".

Cheers,

- Derek.

Thanks, that looks promising, but I get an error as follows when I do a bigpipe merge:

 

 

/config/bigip.conf: "syntax error" at character 'l' in line 399

 

lb_mode fastest

 

 

I'm using 9.0.4.

 

 

Which LB method is currently in use for this pool?

 

 

You can use the one that's already applied.

 

 

The trick here for your need (backup node) is really unsing prioritites for the Pool Members.

 

 

Regards,

 

 

-Rodrigo

 

 

I got past the error by using the gui to modify the pool.

 

 

I have the following:

 

 

pool TestAppHTTP {

 

lb method fastest app resp

 

min active members 1

 

monitor all http

 

member 172.17.244.2:7777

 

member 172.17.245.21:http priority 2

 

}

 

 

However, it just round robins between each pool menber. I expected it to only select the menber set to priority 2, unless it was then down, and then select the other.

 

 

Seems to be a bug in 9.0.4.

 

 

http://tech.f5.com/home/solutions/sol3983.html